Exploring how metronome pacing at varying movement speeds influences local dynamic stability and coordination variability of lumbar spine motion during repetitive lifting

IF 1.6 3区心理学 Q4 NEUROSCIENCES

Human Movement Science Pub Date : 2024-01-12 DOI:10.1016/j.humov.2024.103178

Dennis J. Larson , Elspeth Summers , Stephen H.M. Brown

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引用次数: 0

Abstract

Auditory metronomes have been used to preserve movement consistency when examining local dynamic stability (LDS) and coordination variability (CV) of lumbar spine motion during repetitive movements. However, the potential influence of the metronome itself on these outcome measures has rarely been considered. Therefore, this study investigated the influence of different metronome paces (i.e., lifting speeds) on measures of lumbar spine LDS and thorax-pelvis CV during a repetitive lifting/lowering task in comparison to self-paced movements. Ten participants completed 5 repetitive lift/lower trials, where participants completed 35 consecutive repetitions (analysis on last 30 repetitions) at a self-selected pace for the first and last trial, and were paced by a 10 lift/min, 15 lift/min, and 20 lift/min metronome, in randomized order, for the remaining three trials. The average self-paced lift/lower speed before and after experiencing the three different metronome paced speeds was 16.2 (±1.02) and 17.2 (±0.73) lifts/min, respectively, and the most-preferred metronome pace trial was 15 lifts/min. Thorax-pelvis CV during the self-paced trials were similar (p > 0.05) to the 15 lift/min metronome paced trials, while greater thorax-pelvis CV was observed for the 10 lift/min compared to the 15 lift/min and 20 lift/min and second self-paced trial (all p < 0.026). This movement speed effect was not observed for lumbar spine LDS; however, more-dynamically stable movements were observed during all metronome paced trials in comparison to the self-paced trials. This study highlights that careful consideration is required when employing a metronome to control/manipulate movement characteristics while examining neuromuscular control using non-linear dynamical systems measures.

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探索不同运动速度的节拍器步调如何影响重复性提举过程中腰椎运动的局部动态稳定性和协调变异性

听觉节拍器已被用于在检查重复运动时腰椎运动的局部动态稳定性（LDS）和协调变异性（CV）时保持运动一致性。然而，节拍器本身对这些结果测量的潜在影响却很少被考虑。因此，本研究调查了在重复性提举/下降任务中，不同节拍器节奏（即提举速度）对腰椎LDS和胸-骨盆CV测量结果的影响，并与自节奏运动进行了比较。10 名参与者完成了 5 次重复性上举/下放试验，其中参与者在第一次和最后一次试验中以自选速度完成了 35 次连续重复（对最后 30 次重复进行分析），并在其余三次试验中以 10 次/分钟、15 次/分钟和 20 次/分钟的节拍器随机顺序计时。在体验三种不同节拍器节奏之前和之后，自我节奏的平均提升/降低速度分别为 16.2 (±1.02) 次/分钟和 17.2 (±0.73) 次/分钟，最喜欢的节拍器节奏试验为 15 次/分钟。在自控节奏试验中，胸廓-骨盆CV与15次/分钟节拍器节奏试验相似（p >0.05），而与15次/分钟、20次/分钟和第二次自控节奏试验相比，10次/分钟的胸廓-骨盆CV更大（均为p <0.026）。腰椎 LDS 没有观察到这种运动速度效应；但是，与自节奏试验相比，在所有节拍器节奏试验中都观察到了更加动态稳定的运动。本研究强调，在使用节拍器控制/操纵运动特征时，需要仔细考虑，同时使用非线性动力系统测量方法检查神经肌肉控制。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Human Movement Science 医学-神经科学

CiteScore

3.80

自引率

4.80%

发文量

审稿时长

42 days

期刊介绍： Human Movement Science provides a medium for publishing disciplinary and multidisciplinary studies on human movement. It brings together psychological, biomechanical and neurophysiological research on the control, organization and learning of human movement, including the perceptual support of movement. The overarching goal of the journal is to publish articles that help advance theoretical understanding of the control and organization of human movement, as well as changes therein as a function of development, learning and rehabilitation. The nature of the research reported may vary from fundamental theoretical or empirical studies to more applied studies in the fields of, for example, sport, dance and rehabilitation with the proviso that all studies have a distinct theoretical bearing. Also, reviews and meta-studies advancing the understanding of human movement are welcome. These aims and scope imply that purely descriptive studies are not acceptable, while methodological articles are only acceptable if the methodology in question opens up new vistas in understanding the control and organization of human movement. The same holds for articles on exercise physiology, which in general are not supported, unless they speak to the control and organization of human movement. In general, it is required that the theoretical message of articles published in Human Movement Science is, to a certain extent, innovative and not dismissible as just "more of the same."